Which best explains why barbarian groups were able to weaken the Byzantine Empire? The empire directed its spending on trade, not building up the army.
The empire's territory was extremely small and open for invasion.
The empire's armed forces had little combat experience.
The empire had several unprotected areas for warring groups to invade.

From the examples below, choose the best examples of industries in african countries and their influence on economic development. select all that accurately represent african economies and factors of production. because agriculture remains central to the success of the mali's economy, any change to climate (such as drought) or price of crops significantly affect the country as whole. the thriving manufacturing industry in chad's northern region sustains the country's economy as a whole. egypt's manufacturing and export of cotton is the primary focus of the economy in the country. morocco serves as a representative of service industries in africa with a growing tourism market.

What greek scientist created a screw to move water for irrigation?

When arriving at a navigation lock what is the order of priority